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Date: Fri, 15 Mar 2019 13:38:49 +0000 From: Aisheng Dong <aisheng.dong@....com> To: Peng Fan <peng.fan@....com>, "shawnguo@...nel.org" <shawnguo@...nel.org>, "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>, "kernel@...gutronix.de" <kernel@...gutronix.de>, "festevam@...il.com" <festevam@...il.com>, dl-linux-imx <linux-imx@....com>, Anson Huang <anson.huang@....com>, "arnd@...db.de" <arnd@...db.de>, "linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> CC: "van.freenix@...il.com" <van.freenix@...il.com> Subject: RE: [PATCH 1/2] ARM: imx: drop uneccessary of_platform_default_populate [...] > > Originally devices are registered in arch_initcall. Now it will be a > > bit later in arch_initcall_sync and this may cause a bit risk if the > > code under the default_populate want to access the device service provided > by early probe. > > > > Probably it's more safe to leave as it is unless you can double > > confirm there're no such code depends on accessing early probed > > devices as follows before we can make the change. > > This has been boot tested on 6Q-SDB/6UL-EVK/6SL-EVK board. > For i.MX, I only see pinctrl driver use arch_initcall from the link, > https://elixir.bootlin.com/linux/latest/ident/arch_initcall > > From my boot test, the pinctrl driver probe will be delayed a bit, but I do not > see issues. > >From what I saw, imx6q_1588_init() and imx6q_axi_init() will use syscon which is registered with postcore_initcall. Without having syscon devices populated, I wonder those calls may fall. Can you double check it? Regards Dong Aisheng
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